Echinocereus fendleri var. kuenzleri
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Chauvin, Y. and Swinehart, A. 1998. Kuenzler's cactus inventory completion report. Field notes on sensitive plant survey and population site reports from May 18-31, 1998. 100 p.
Fragua, S. (2004) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: Echinocereus var. fendleri kuenzleri FY04 survey.
Roemmich, A. Kuhae, K. Terry, K. Theye, N. Cavello, J. (2014) Sensitive Plant Site Report, Population Site Report, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 8 p.
Fragua, S. (2003) Multiple Bundled Sensitive Plant Site Reports, Population Site Report, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 32 p.
Worthington, R. 2002. Inventory of the Flora of the Guadalupe Mountains, New Mexico and Texas. Second Working Draft. USFS
Unknown (2002) Handwritten Field Notes with Population Locations for Echinocereus fendleri var. kuenzleri. Guadalupe Ranger District, Lincoln National Forest, USFS. 41 p.
Paul, L. Schmidke, P. (2002) Inventory Completion Report, Sensitive Plant Survey, Lincoln National Forest, Field Notes. Project Name: Guadlaupe RD Rx Burn E.A. Kuenzler's Survey. Guadalupe Ranger District, Lincoln National Forest, USFS. 4 p.
Fragua, S. Stewart, P. Finley, M. Starey, W. (2013) Multiple Bundled Sensitive Plant Sire Reports, Population Site Report, Lincln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 8 p.
Fragua, S. (2002) Multiple Bundled Inventory Completion Reports, Senstive Plant Survey, Lincoln National Forest, Field Notes. Guadalupe Ranger District, Lincoln National Forest, USFS. 30 p.